Nonfreezing pipe

Details Nonfreezing pipe Nonfreezing pipe

1989-10-19

1991-05-14

Bryant, III, James E.

Pipes and tubular conduits

Distinct layers

With intermediate insulation layer

138 32, 138148, F16L 914

Patent

active

050147528

ABSTRACT:
The nonfreezing pipe with a double wall construction comprises an inner shell having openings at its opposite ends, an outer shell extending axially around the inner shell to form an annular space surrounding the inner shell, and at least one end closure member connecting between one end of the outer shell and the external wall portion of the inner shell. The annular space is evacuated.

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